async refactor & docker deploy environment

handlers/del_button.py

@@ -1,21 +1,27 @@
 from telegram import Update
 from telegram.ext import CommandHandler, ContextTypes
-from db import SessionLocal
+from db import AsyncSessionLocal
 from models import Button
 
 async def del_button(update: Update, context: ContextTypes.DEFAULT_TYPE):
     args = context.args
     if not args:
-        await update.message.reply_text('Используйте: /del_button <название>')
+        if update.message:
+            await update.message.reply_text('Используйте: /del_button <название>')
         return
     name = args[0]
-    session = SessionLocal()
-    button = session.query(Button).filter_by(name=name).first()
-    if not button:
-        await update.message.reply_text('Кнопка не найдена.')
-        session.close()
-        return
-    session.delete(button)
-    session.commit()
-    session.close()
-    await update.message.reply_text(f'Кнопка "{name}" удалена.')
+    session = AsyncSessionLocal()
+    try:
+        from sqlalchemy import select
+        result = await session.execute(select(Button).where(Button.name == name))
+        button = result.scalar_one_or_none()
+        if not button:
+            if update.message:
+                await update.message.reply_text('Кнопка не найдена.')
+            return
+        await session.delete(button)
+        await session.commit()
+        if update.message:
+            await update.message.reply_text(f'Кнопка "{name}" удалена.')
+    finally:
+        await session.close()